JPH09317587A - Controller for emulsion fuel - Google Patents
Controller for emulsion fuelInfo
- Publication number
- JPH09317587A JPH09317587A JP8154870A JP15487096A JPH09317587A JP H09317587 A JPH09317587 A JP H09317587A JP 8154870 A JP8154870 A JP 8154870A JP 15487096 A JP15487096 A JP 15487096A JP H09317587 A JPH09317587 A JP H09317587A
- Authority
- JP
- Japan
- Prior art keywords
- emulsion fuel
- water
- mixing ratio
- exhaust gas
- heavy oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はディーゼル機関に適
用されるエマルジョン燃料の混合比率を制御する装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for controlling a mixing ratio of emulsion fuel applied to a diesel engine.
【０００２】[0002]
【従来の技術】舶用ディーゼル機関は広大な海洋で使用
されるため、排気ガス中の大気汚染物質についてあまり
問題視されなかった。しかし、海上輸送量の増大に伴い
海上交通が錯綜し、沿岸に近く且つ交通量の多い領域で
は、舶用ディーゼル機関は大気汚染源として無視できな
い存在として認識されるようになり、国際海事機構（Ｉ
ＭＯ）・海洋環境保護委員会（ＭＥＰＣ）においてＮＯ
ｘ、ＳＯｘの排出規制が論議され実施に移されようとし
ている。2. Description of the Related Art Since marine diesel engines are used in vast oceans, air pollutants in exhaust gas have not been seen as a problem. However, as the volume of sea transportation increases, sea traffic becomes complicated, and in regions near the coast and where traffic is heavy, marine diesel engines have become recognized as a source of air pollution that cannot be ignored, and the International Maritime Organization (I)
MO) ・ No in Marine Environment Protection Committee (MEPC)
x and SOx emission regulations have been discussed and are about to be implemented.
【０００３】実施可能ないし就航船での実施例のあるＮ
Ｏｘの低減手法として、給気中への水噴霧、シリンダ内
への水噴霧、多口燃料噴霧、エマルジョン燃料の使用な
どがあるが、図６は重油と水の両者のうち水の流量を調
整してエマルジョン燃料の混合比率を制御する従来のエ
マルジョン燃料の制御装置の一例の基本的な構成の説明
図である。N that is feasible or has an example in service
As methods for reducing Ox, there are water spray in the air supply, water spray in the cylinder, multi-port fuel spray, use of emulsion fuel, etc., but FIG. 6 adjusts the flow rate of water of both heavy oil and water. It is explanatory drawing of the basic composition of an example of the conventional control apparatus of emulsion fuel which controls the mixing ratio of emulsion fuel.
【０００４】図６において、１はエマルジョン燃料生成
装置で、重油流量計６、エマルジョン燃料流量計７、自
動制御装置８、水供給ポンプ９、混合装置１０とこれら
の間を連通する実線で示した管路及び点線で示した制御
用回路から形成され、前記重油流量計６は重油タンク２
に連通し、水供給ポンプ９は水タンク３に連通してい
る。４は前記生成装置１からエマルジョン燃料の供給を
うけるディーゼル機関である。In FIG. 6, reference numeral 1 denotes an emulsion fuel generator, which is shown by a heavy oil flow meter 6, an emulsion fuel flow meter 7, an automatic control device 8, a water supply pump 9, a mixing device 10 and a solid line connecting these components. The heavy oil flow meter 6 is formed of a pipeline and a control circuit shown by a dotted line.
The water supply pump 9 communicates with the water tank 3. A diesel engine 4 receives the emulsion fuel from the generator 1.
【０００５】以下、前記構成による作用について図７に
示したフローチャートを参照して説明する。従来の装置
ではエマルジョン燃料の生成に際して、まずエンジンの
オペレータがエンジンの作動状況に対応させてあらかじ
め重油Ｆと水Ｗの混合比率を設定する。重油流量計６及
びエマルジョン燃料流量計７から計測した重油Ｆとエマ
ルジョン燃料（Ｆ＋Ｗ）の流量信号が出力され自動制御
装置８に入力する。The operation of the above configuration will be described below with reference to the flow chart shown in FIG. In the conventional apparatus, when the emulsion fuel is generated, the engine operator first sets the mixing ratio of the heavy oil F and the water W in advance in accordance with the operating condition of the engine. Flow signals of the heavy oil F and emulsion fuel (F + W) measured by the heavy oil flow meter 6 and the emulsion fuel flow meter 7 are output and input to the automatic control device 8.
【０００６】自動制御装置８では入力した重油Ｆとエマ
ルジョン燃料（Ｆ＋Ｗ）の流量信号に基づき重油Ｆと水
Ｗの実測混合比率を算出し、あらかじめ設定した混合比
率と比較する。この比較の結果、水Ｗの混入比率が設定
値より小さい場合は、水Ｗの混入比率を上げるため、水
供給ポンプ９への供給電流を増加させる指示信号を出力
する。水供給ポンプ９の回転数が上昇し、水Ｗの混入比
率が上がる。The automatic control device 8 calculates an actual mixing ratio of the heavy oil F and water W based on the input flow signals of the heavy oil F and the emulsion fuel (F + W) and compares it with a preset mixing ratio. As a result of this comparison, if the mixing ratio of water W is smaller than the set value, an instruction signal for increasing the supply current to the water supply pump 9 is output in order to increase the mixing ratio of water W. The rotation speed of the water supply pump 9 increases, and the mixing ratio of the water W increases.
【０００７】逆に、水Ｗの混入比率が設定値より大きい
場合は、水Ｗの混入比率を下げるため、水供給ポンプ９
への供給電流を減少させる指示信号を出力する。もし、
水Ｗの混入比率が設定値と同レベルのときは現状を維持
することになる。On the contrary, when the mixing ratio of the water W is larger than the set value, the mixing ratio of the water W is lowered so that the water supply pump 9
An instruction signal for reducing the current supplied to the device is output. if,
When the mixing ratio of water W is at the same level as the set value, the current state is maintained.
【０００８】エマルジョン燃料による従来例としては、
１０％程度の水を混入したエマルジョン燃料を使用した
就航船が長時間運航された実例がある。水の混入比率を
燃料の３０％程度にすると、水の蒸発及び熱解離によっ
て火炎温度が低下してＮＯｘはおよそ３０％程度減少す
る。同時に水が入っただけ噴射燃料のモーメンタムが増
大し噴霧の分散が改善されるため、ばいじんを低減させ
る効果もある。As a conventional example using an emulsion fuel,
There is an example of a long-term operation of a service ship that uses emulsion fuel mixed with about 10% water. When the mixing ratio of water is about 30% of the fuel, the flame temperature is lowered by evaporation and thermal dissociation of water, and NOx is reduced by about 30%. At the same time, the momentum of the injected fuel increases as much as water is added, and the dispersion of the spray is improved, which also has the effect of reducing soot and dust.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、前記従
来のエマルジョン燃料の制御装置には次のような問題点
がある。即ち、従来の装置では重油と水の混合比率はエ
ンジンのオペレータがエンジンの作動状況に対応させて
あらかじめ設定しておく必要があった。However, the conventional emulsion fuel control device has the following problems. That is, in the conventional device, the mixing ratio of heavy oil and water had to be preset by the engine operator in accordance with the operating condition of the engine.
【００１０】そのため、オペレータ個人の熟練度の差に
よって混合比率にばらつきを生じ、必要量以上の水の供
給による燃料消費の悪化や、水供給量の不足による排気
ガス中のＮＯｘ濃度の上昇等の不具合を生じるおそれが
ある。また、ＮＯｘ濃度は運転条件によって変化するの
で、環境規制値等の目標値を常時満足するようにエマル
ジョン燃料の混合比率を設定することは極めてむずかし
い。Therefore, the mixing ratio varies depending on the operator's individual skill level, resulting in deterioration of fuel consumption due to supply of more water than necessary, and increase of NOx concentration in exhaust gas due to insufficient water supply. It may cause a malfunction. Further, since the NOx concentration changes depending on the operating conditions, it is extremely difficult to set the mixing ratio of the emulsion fuel so as to always satisfy the target value such as the environmental regulation value.
【００１１】本発明の目的は、前記問題点を解決し、排
気ガス中のＮＯｘ濃度を計測し、その計測値に基づいて
エマルジョン燃料の混合比率を自動的且つ的確に調整す
ることにより、エンジンオペレータの判断によることな
くＮＯｘの排出濃度を望ましいレベルまで低減し得るエ
マルジョン燃料の制御装置を提供するにある。An object of the present invention is to solve the above-mentioned problems, measure the NOx concentration in exhaust gas, and automatically and accurately adjust the mixing ratio of emulsion fuel based on the measured value. Another object of the present invention is to provide an emulsion fuel control device capable of reducing the NOx emission concentration to a desired level without depending on the above judgment.
【００１２】[0012]
【課題を解決するための手段】本発明のエマルジョン燃
料の制御装置は、重油と水とのどちらか一方の流量を調
整してエマルジョン燃料の混合比率を制御する制御手段
を備えたディーゼル機関のエマルジョン燃料の制御装置
において、排気ガス中のＮＯｘ濃度の計測値を前記制御
手段に入力し、該計測値に基づいてエマルジョン燃料の
混合比率を設定するように構成したことを特徴としてい
る。The emulsion fuel control apparatus of the present invention is equipped with a control means for controlling the mixing ratio of emulsion fuel by adjusting the flow rate of either heavy oil or water. In the fuel control device, the measured value of the NOx concentration in the exhaust gas is input to the control means, and the mixture ratio of the emulsion fuel is set based on the measured value.
【００１３】具体的には、重油流量計、エマルジョン燃
料流量計、自動制御装置、水供給ポンプ、混合装置、こ
れらの間を連通する管路及び制御回路などからなるエマ
ルジョン燃料生成装置と、重油タンク及び水タンクと、
排気ガス中のＮＯｘの濃度を検出し実測データを前記エ
マルジョン燃料生成装置中の自動制御装置に出力する排
気ガス計測装置などによって構成される。Specifically, a heavy oil flow meter, an emulsion fuel flow meter, an automatic control device, a water supply pump, a mixing device, an emulsion fuel generating device including a conduit and a control circuit connecting these components, and a heavy oil tank. And a water tank,
It is composed of an exhaust gas measuring device or the like that detects the concentration of NOx in the exhaust gas and outputs actual measurement data to the automatic control device in the emulsion fuel generation device.
【００１４】[0014]
【作用】次に前記のような構成による本発明の手段の作
用について説明する。あらかじめ、目標とする排気ガス
中のＮＯｘ濃度と、エマルジョン燃料（Ｆ＋Ｗ）中の水
Ｗの混入比率の上限値を設定しておく。エマルジョン燃
料生成装置においては、重油流量計及びエマルジョン燃
料流量計から出力される流量信号と、排気ガス計測装置
から出力される排気ガス中のＮＯｘ濃度の実測データの
信号とが自動制御装置に入力される。Next, the operation of the means of the present invention having the above construction will be described. The target NOx concentration in the exhaust gas and the upper limit of the mixing ratio of water W in the emulsion fuel (F + W) are set in advance. In the emulsion fuel generation device, the flow rate signal output from the heavy oil flow meter and the emulsion fuel flow meter and the signal of the actual measurement data of the NOx concentration in the exhaust gas output from the exhaust gas measurement device are input to the automatic control device. It
【００１５】該自動制御装置ではエマルジョン燃料（Ｆ
＋Ｗ）の重油Ｆと水Ｗの混合比率が演算され、あらかじ
め設定した水Ｗの混入比率の上限値と比較される。この
比較の結果、実測データに基づく水Ｗの混入比率が設定
上限値より大きいと判定された場合には、水Ｗの混入比
率を下げるため水供給ポンプへの供給電流を減少させる
指示信号が出力される。In the automatic control device, the emulsion fuel (F
The mixing ratio of heavy oil F and water W of (+ W) is calculated and compared with a preset upper limit value of the mixing ratio of water W. As a result of this comparison, when it is determined that the mixing ratio of water W based on the actual measurement data is larger than the set upper limit value, an instruction signal for reducing the supply current to the water supply pump is output to reduce the mixing ratio of water W. To be done.
【００１６】また、実測データに基づく水Ｗの混入比率
が設定してあった水Ｗの混入比率の上限値より小さいか
等しいと判定された場合には、実測データに基づく排気
ガス中のＮＯｘ濃度とあらかじめ設定した目標ＮＯｘ濃
度を比較する。このＮＯｘ濃度の比較の結果、実測ＮＯ
ｘ濃度が目標ＮＯｘ濃度より高い場合は、実測されるＮ
Ｏｘ濃度を下げるべく水Ｗの混入比率を上げるため水供
給ポンプへの供給電流を増加させる指示信号が出力され
る。When it is determined that the mixing ratio of water W based on the measured data is smaller than or equal to the upper limit value of the set mixing ratio of water W, the NOx concentration in the exhaust gas based on the measured data. And a target NOx concentration set in advance are compared. As a result of the comparison of the NOx concentrations, the measured NO
If the x concentration is higher than the target NOx concentration, the measured N
An instruction signal for increasing the supply current to the water supply pump is output in order to increase the mixing ratio of the water W in order to reduce the Ox concentration.
【００１７】逆に、実測ＮＯｘ濃度が目標ＮＯｘ濃度よ
り低い場合は、水Ｗの混入比率を下げるため水供給ポン
プへの供給電流を減少させる指示信号を出力する。も
し、実測ＮＯｘ濃度が目標ＮＯｘ濃度に等しい場合には
現状を維持することになる。On the contrary, when the measured NOx concentration is lower than the target NOx concentration, an instruction signal for reducing the supply current to the water supply pump is output in order to reduce the mixing ratio of the water W. If the measured NOx concentration is equal to the target NOx concentration, the current state will be maintained.
【００１８】前記のような作用により、エンジンオペレ
ータの経験に基づく判断によることなく、エマルジョン
燃料（Ｆ＋Ｗ）の重油Ｆと水Ｗの混合比率をエンジンの
作動状況に応じて自動的且つ的確に調整し、混合装置で
十分にエマルジョン化してからエンジンにエマルジョン
燃料が供給される。これにより、排気ガス中のＮＯｘ濃
度を望ましいレベルまで低減し得るエマルジョン燃料の
制御装置として機能する。With the above operation, the mixing ratio of the heavy oil F and the water W of the emulsion fuel (F + W) is automatically and accurately adjusted according to the operating condition of the engine without judgment based on the experience of the engine operator. , The emulsion fuel is sufficiently emulsified by the mixing device, and then the emulsion fuel is supplied to the engine. This functions as an emulsion fuel control device capable of reducing the NOx concentration in the exhaust gas to a desired level.
【００１９】[0019]
【発明の実施の形態】図１は本発明の実施の形態に係る
エマルジョン燃料の制御装置の構成説明図で、図２はこ
の構成による作用を説明するフローチャートである。以
下、図１、２を参照してその構成と作用について説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a configuration explanatory view of an emulsion fuel control apparatus according to an embodiment of the present invention, and FIG. 2 is a flow chart for explaining the operation of this configuration. Hereinafter, the configuration and operation will be described with reference to FIGS.
【００２０】図１において、１はエマルジョン燃料生成
装置で、重油流量計６、エマルジョン燃料流量計７、自
動制御装置８、水供給ポンプ９、混合装置１０とこれら
の間を連通する実線で示した管路及び点線で示した制御
用回路から形成され、前記重油流量計６は重油タンク２
に連通し、水供給ポンプ９は水タンク３に連通してい
る。４は前記生成装置１からエマルジョン燃料の供給を
うけるディーゼル機関である。５は排気ガス計測装置
で、前記ディーゼル機関４の排気管路から排気ガスを抽
出して分析し、ＮＯｘの濃度についての信号を前記自動
制御装置８に出力する。In FIG. 1, reference numeral 1 denotes an emulsion fuel generator, which is shown by a heavy oil flow meter 6, an emulsion fuel flow meter 7, an automatic control device 8, a water supply pump 9, a mixing device 10 and a solid line connecting them. The heavy oil flow meter 6 is formed of a pipeline and a control circuit shown by a dotted line.
The water supply pump 9 communicates with the water tank 3. A diesel engine 4 receives the emulsion fuel from the generator 1. An exhaust gas measuring device 5 extracts and analyzes the exhaust gas from the exhaust pipe of the diesel engine 4, and outputs a signal about the concentration of NOx to the automatic control device 8.
【００２１】次に図２のフローチャートを参照して前記
構成による作用について説明する。あらかじめ、目標と
する排気ガス中のＮＯｘ濃度と、エマルジョン燃料（Ｆ
＋Ｗ）中の水Ｗの混入比率の上限値を設定しておく。こ
の設定の一例を図３に示した。エマルジョン燃料生成装
置１においては、重油流量計６から出力される重油Ｆの
流量信号と、エマルジョン燃料流量計７から出力される
エマルジョン燃料（Ｆ＋Ｗ）の流量信号と、排気ガス計
測装置５から出力される排気ガス中のＮＯｘ濃度の実測
データの信号とが自動制御装置８に入力される。Next, the operation of the above configuration will be described with reference to the flowchart of FIG. The target NOx concentration in the exhaust gas and the emulsion fuel (F
The upper limit of the mixing ratio of water W in (+ W) is set. An example of this setting is shown in FIG. In the emulsion fuel generation device 1, the flow signal of the heavy oil F output from the heavy oil flow meter 6, the flow signal of the emulsion fuel (F + W) output from the emulsion fuel flow meter 7, and the exhaust gas measurement device 5 are output. The measured data signal of the NOx concentration in the exhaust gas is input to the automatic control device 8.
【００２２】該自動制御装置８ではエマルジョン燃料
（Ｆ＋Ｗ）の重油Ｆと水Ｗの混合比率が演算され、あら
かじめ設定した水Ｗの混入比率の上限値と比較される。
この比較の結果、実測データに基づく水Ｗの混入比率が
あらかじめ設定してあった水Ｗの混入比率の上限値より
大きい判定された場合には、水Ｗの混入比率を下げるた
め水供給ポンプ９への供給電流を減少させる指示信号が
出力され、水供給ポンプ９の回転数が低下し、水Ｗの混
入比率が下がる。In the automatic control device 8, the mixing ratio of the heavy oil F of the emulsion fuel (F + W) and the water W is calculated and compared with a preset upper limit value of the mixing ratio of the water W.
As a result of this comparison, when it is determined that the mixing ratio of water W based on the actual measurement data is larger than the preset upper limit value of the mixing ratio of water W, the water supply pump 9 is used to reduce the mixing ratio of water W. An instruction signal to reduce the supply current to the water is output, the rotation speed of the water supply pump 9 decreases, and the mixing ratio of the water W decreases.
【００２３】また、実測データに基づく水Ｗの混入比率
が設定してあった水Ｗの混入比率の上限値より小さいか
等しいと判定された場合には、実測データに基づく排気
ガス中のＮＯｘ濃度とあらかじめ設定した目標ＮＯｘ濃
度を比較する。When it is determined that the mixing ratio of the water W based on the measured data is smaller than or equal to the upper limit value of the set mixing ratio of the water W, the NOx concentration in the exhaust gas based on the measured data. And a target NOx concentration set in advance are compared.
【００２４】このＮＯｘ濃度の比較の結果、実測ＮＯｘ
濃度が目標ＮＯｘ濃度より高い場合は、水Ｗの混入比率
を上げるため水供給ポンプ９への供給電流を増加させる
指示信号が出力され，水供給ポンプ９の回転数が上昇
し、水Ｗの混入比率が上がる。反対に、実測ＮＯｘ濃度
が目標ＮＯｘ濃度より低い場合は、水Ｗの混入比率を下
げるため水供給ポンプ９への供給電流を減少させる指示
信号を入力する。もし、実測ＮＯｘ濃度が目標ＮＯｘ濃
度に等しい場合には現状を維持することになる。As a result of the comparison of the NOx concentrations, the measured NOx
When the concentration is higher than the target NOx concentration, an instruction signal for increasing the supply current to the water supply pump 9 is output in order to increase the mixing ratio of the water W, the rotation speed of the water supply pump 9 is increased, and the water W is mixed. The ratio goes up. On the contrary, when the measured NOx concentration is lower than the target NOx concentration, an instruction signal for reducing the supply current to the water supply pump 9 is input in order to reduce the mixing ratio of the water W. If the measured NOx concentration is equal to the target NOx concentration, the current state will be maintained.
【００２５】前記したようにエマルジョン燃料生成装置
１では、重油流量計６とエマルジョン燃料流量計７から
出力される流量信号と、排気ガス計測装置５から出力さ
れるＮＯｘ濃度の実測データの信号とが自動制御装置８
に入力され、該自動制御装置８での演算、比較、判定の
処理結果に基づいて水供給ポンプ９を制御することによ
り、エマルジョン燃料（Ｆ＋Ｗ）の重油Ｆと水Ｗの混合
比率が設定値に合致するように自動的且つ的確に調整さ
れる。As described above, in the emulsion fuel generator 1, the flow rate signals output from the heavy oil flow meter 6 and the emulsion fuel flow meter 7 and the signal of the actual measurement data of the NOx concentration output from the exhaust gas measuring device 5 are provided. Automatic control device 8
Is input to the automatic control device 8 and the water supply pump 9 is controlled based on the processing results of the calculation, comparison, and determination by the automatic control device 8 to set the mixing ratio of the heavy oil F of the emulsion fuel (F + W) and the water W to a set value. Automatically and accurately adjusted to match.
【００２６】その後、混合装置１０で十分にエマルジョ
ン化してからディーゼル機関４にエマルジョン燃料が供
給される。これにより、エンジンオペレータの経験に基
づく判断によることなく、排気ガス中のＮＯｘ濃度を望
ましいレベルまで低減し得るエマルジョン燃料の制御装
置として機能する。After that, the emulsion fuel is sufficiently emulsified in the mixing device 10 and then the emulsion fuel is supplied to the diesel engine 4. This functions as an emulsion fuel control device capable of reducing the NOx concentration in the exhaust gas to a desired level without making a judgment based on the experience of the engine operator.
【００２７】混合装置１０を介して十分にエマルジョン
化した燃料の供給をうけディーゼル機関４が作動してい
る際の機関回転数と排気ガス中のＮＯｘ濃度の関係の一
例を図４に示した。図中の曲線Ｃはあらかじめ目標とし
て設定したＮＯｘ濃度のガイドラインで、ガイドライン
を境として領域Ｒでは実測濃度が目標濃度を上回ってお
り、領域Ｌでは実測濃度が目標濃度以下になっている。FIG. 4 shows an example of the relationship between the engine speed and the NOx concentration in the exhaust gas when the diesel engine 4 is supplied with the sufficiently emulsified fuel supplied through the mixing device 10. A curve C in the drawing is a guideline of NOx concentration set as a target in advance, and the measured concentration exceeds the target concentration in the region R and the measured concentration is less than or equal to the target concentration in the region L with the guideline as a boundary.
【００２８】機関の作動中、排気ガス計測装置５によっ
て排気ガス中のＮＯｘ濃度を実測し、そのデータを重油
Ｆ、エマルジョン燃料（Ｆ＋Ｗ）の流量信号と共に自動
制御装置８に入力し、実測ＮＯｘ濃度が領域Ｒにあると
きは領域Ｌに移るように水供給ポンプ９を制御して重油
Ｆと水Ｗの混合比率を変化させ、排出ＮＯｘを低減させ
る。During operation of the engine, the NOx concentration in the exhaust gas is measured by the exhaust gas measuring device 5, and the data is input to the automatic control device 8 together with the flow signals of the heavy oil F and emulsion fuel (F + W) to measure the measured NOx concentration. Is in the region R, the water supply pump 9 is controlled so as to move to the region L, the mixing ratio of the heavy oil F and the water W is changed, and the exhausted NOx is reduced.
【００２９】図５にエマルジョン燃料を使用する舶用デ
ィーゼル機関の定格回転数と単位出力当りのＮＯｘ排出
量（ｇ／ｋｗ・ｈ）の重み付け平均値の関係の一例を示
した。図中の曲線Ｃは国際海事機構（ＩＭＯ）の環境規
制案によるガイドラインである。ＮＯｘの単位出力当り
排出量の重み付け平均値が領域Ａに入るように、実測し
た排気ガス中のＮＯｘ濃度に基づく自動制御装置８での
演算、比較、判定によって水供給ポンプ９を制御し、重
油Ｆと水Ｗの混合比率を変化させ、常時規制値以内での
運航となるように制御する。FIG. 5 shows an example of the relationship between the rated speed of a marine diesel engine that uses emulsion fuel and the weighted average value of NOx emissions per unit output (g / kWh). Curve C in the figure is a guideline based on the draft environmental regulations of the International Maritime Organization (IMO). The water supply pump 9 is controlled by calculation, comparison, and determination by the automatic control device 8 based on the measured NOx concentration in the exhaust gas so that the weighted average value of the discharge amount of NOx per unit output falls within the region A, and the heavy fuel oil is controlled. The mixing ratio of F and water W is changed to control so that the operation is always within the regulation value.
【００３０】[0030]
【発明の効果】本発明のエマルジョン燃料の制御装置に
よれば、排気ガス中のＮＯｘ濃度の実測データに基づ
き、エマルジョン燃料の重油と水の混合比率があらかじ
め設定した目標値に合致するように自動的且つ的確に調
整される。これにより、エンジンオペレータの経験に基
づく判断によることなく、排気ガス中のＮＯｘ濃度を規
制値を満足する望ましいレベルまで低減させることがで
きる。According to the emulsion fuel control apparatus of the present invention, based on the measured data of the NOx concentration in the exhaust gas, the emulsion fuel control system automatically adjusts the mixture ratio of heavy oil and water of the emulsion fuel to a preset target value. It is adjusted accurately and accurately. As a result, the NOx concentration in the exhaust gas can be reduced to a desired level that satisfies the regulation value without making a judgment based on the experience of the engine operator.
【図１】本発明の実施の形態に係るエマルジョン燃料の
制御装置の構成説明図。FIG. 1 is a structural explanatory view of an emulsion fuel control device according to an embodiment of the present invention.
【図２】図１に示したエマルジョン燃料の制御装置の作
用を説明するフローチャート。FIG. 2 is a flowchart for explaining the operation of the emulsion fuel control device shown in FIG.
【図３】図２に示したフローチャートの第１ステップで
参照するＮＯｘ濃度の目標値とエマルジョン燃料の重油
と水の混合比率の関係の説明図。FIG. 3 is an explanatory diagram of a relationship between a target value of NOx concentration and a mixing ratio of heavy oil and water of emulsion fuel, which is referred to in the first step of the flowchart shown in FIG.
【図４】機関回転数と排出ＮＯｘ濃度の関係の説明図。FIG. 4 is an explanatory diagram of a relationship between engine speed and exhaust NOx concentration.
【図５】機関の定格回転数とＮＯｘの単位出力当り排出
量の重み付け平均値の関係の説明図。FIG. 5 is an explanatory diagram of a relationship between a rated engine speed and a weighted average value of NOx emissions per unit output.
【図６】従来のエマルジョン燃料の制御装置の構成説明
図。FIG. 6 is a structural explanatory view of a conventional emulsion fuel control device.
【図７】図６に示した従来のエマルジョン燃料の制御装
置の作用を説明するフローチャート。FIG. 7 is a flowchart illustrating the operation of the conventional emulsion fuel control device shown in FIG.
１ エマルジョン燃料生成装置 ２ 重油タンク ３ 水タンク ４ ディーゼル機関 ５ 排気ガス計測装置 ６ 重油流量計 ７ エマルジョン燃料流量計 ８ 自動制御装置 ９ 水供給ポンプ １０ 混合装置 1 Emulsion Fuel Generation Device 2 Heavy Oil Tank 3 Water Tank 4 Diesel Engine 5 Exhaust Gas Measurement Device 6 Heavy Oil Flow Meter 7 Emulsion Fuel Flow Meter 8 Automatic Control Device 9 Water Supply Pump 10 Mixing Device
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ０２Ｄ 45/00 ３６４ Ｆ０２Ｄ 45/00 ３６４Ｋ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display area F02D 45/00 364 F02D 45/00 364K
Claims (1)
してエマルジョン燃料の混合比率を制御する制御手段を
備えたディーゼル機関のエマルジョン燃料の制御装置に
おいて、排気ガス中のＮＯｘ濃度の計測値を前記制御手
段に入力し、該計測値に基づいてエマルジョン燃料の混
合比率を設定するように構成したことを特徴とするエマ
ルジョン燃料の制御装置。1. A NOx concentration in exhaust gas is measured in a control device for an emulsion fuel of a diesel engine, which is equipped with control means for controlling a mixing ratio of the emulsion fuel by adjusting a flow rate of either heavy oil or water. A control device for emulsion fuel, wherein a value is input to the control means, and the mixing ratio of the emulsion fuel is set based on the measured value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15487096A JP3801263B2 (en) | 1996-05-27 | 1996-05-27 | Emulsion fuel control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15487096A JP3801263B2 (en) | 1996-05-27 | 1996-05-27 | Emulsion fuel control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09317587A true JPH09317587A (en) | 1997-12-09 |
| JP3801263B2 JP3801263B2 (en) | 2006-07-26 |
Family
ID=15593733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15487096A Expired - Fee Related JP3801263B2 (en) | 1996-05-27 | 1996-05-27 | Emulsion fuel control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3801263B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010025522A (en) * | 2008-07-24 | 2010-02-04 | Deguchi Tetsuro | Emulsion fuel supply system |
| JP2010514967A (en) * | 2007-10-08 | 2010-05-06 | マーン・ディーゼール・フィリアル・アーエフ・マーン・ディーゼール・エスエー・ティスクランド | Method and apparatus for controlling dual fuel compression ignition engine |
| JP2013053625A (en) * | 2011-09-02 | 2013-03-21 | Man Diesel & Turbo Se | Reciprocating piston internal combustion engine, and method for operating the same |
| WO2017029913A1 (en) * | 2015-08-20 | 2017-02-23 | 株式会社大島造船所 | Fuel composition, ship, and fuel composition automatic switching system |
| WO2018154651A1 (en) * | 2017-02-22 | 2018-08-30 | 株式会社大島造船所 | Fuel composition, ship, and fuel composition automatic switching system |
-
1996
- 1996-05-27 JP JP15487096A patent/JP3801263B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010514967A (en) * | 2007-10-08 | 2010-05-06 | マーン・ディーゼール・フィリアル・アーエフ・マーン・ディーゼール・エスエー・ティスクランド | Method and apparatus for controlling dual fuel compression ignition engine |
| KR101363942B1 (en) * | 2007-10-08 | 2014-02-14 | 맨 디젤 앤드 터보 필리얼 아프 맨 디젤 앤드 터보 에스이 티스크랜드 | Method and apparatus for controlling a dual fuel compression ignition engine |
| JP2010025522A (en) * | 2008-07-24 | 2010-02-04 | Deguchi Tetsuro | Emulsion fuel supply system |
| JP4544480B2 (en) * | 2008-07-24 | 2010-09-15 | 出口 哲郎 | Emulsion fuel supply system |
| JP2013053625A (en) * | 2011-09-02 | 2013-03-21 | Man Diesel & Turbo Se | Reciprocating piston internal combustion engine, and method for operating the same |
| WO2017029913A1 (en) * | 2015-08-20 | 2017-02-23 | 株式会社大島造船所 | Fuel composition, ship, and fuel composition automatic switching system |
| US10583896B2 (en) | 2015-08-20 | 2020-03-10 | Oshima Shipbuilding Co., Ltd. | Fuel composition, ship, and automatic fuel composition-switching system |
| WO2018154651A1 (en) * | 2017-02-22 | 2018-08-30 | 株式会社大島造船所 | Fuel composition, ship, and fuel composition automatic switching system |
| CN110337489A (en) * | 2017-02-22 | 2019-10-15 | 株式会社大岛造船所 | Fuel composition, ship and fuel composition automatic switchover system |
| JPWO2018154651A1 (en) * | 2017-02-22 | 2020-01-16 | 株式会社大島造船所 | Fuel composition, ship, and automatic fuel composition switching system |
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|---|---|
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